3、 D。原因同上。

2、 D。原因同上。

1、 C。Let’s(注意不是Let us)打头的祈使句的反意疑问句通常用shall we。

22、 Your mother has never tried shopping on the Internet. (改为反意疑问句)

Your mother has never tried shopping on the Internet，_______　 _______?(上海)

KEYS　 TO　 THE　 EXERCISES

21、 ---Kate didn’t go to school yesterday, did she?

---________, though she did not feel very well.(安徽芜湖)

A. Yes, she did　　 B. Yes, she didn’t　　　 C. No, she didn’t　　　 D. No, she did

20、 - You didn’t go to school yesterday, did you?　

- 　　　　　, though there was a heavy rain.(湖北咸宁)

　　　 A. Yes, I did　 　　　　　　 B. No, I didn’t　 　　　　　 C. Yes, I didn’t 　　　　　　 D. No, I did

19、 -He’s already back to Australia, _________?(江苏常州)

　　 - _________. He is on a visit to Shanghai.

A. isn’t he; No　　　 B. hasn’t he; Yes　　　 C. isn’t he; Yes　　 D. hasn’t he; No

18、 -She doesn’t like geography， does she?(湖南娄底)

-　　　_____　 .

A. Yes， she does　　　　　　　　 B. Yes， she doesn’t　　　　　　　　　　 C. No， she does　

17、 -Meat isn’t really dangerous, is it? (河北荆州)

-Oh! _________! It’s not at all good for our health.

A．Yes, it isn’t 　　 　B．No, it is　　　　　 　　　 C．Yes, it is　　　 D．No; it isn’t

16、---He didn’t go to the lecture this morning, did he?

　　 ---______. Though he was not feeling very well.(甘肃兰州)

A. No, he didn’t.　　 B. Yes, he did.　　　 C. No, he did.　　　　 D. Yes, he didn’t.